"

 COPYRIGHT (c) 1994 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

"{ Package: 'stx:libwidg2' }"

"{ NameSpace: Smalltalk }"

EditField subclass:#FilenameEditField

	instanceVariableNames:'directoriesOnly filesOnly directory acceptOnExpand'

	classVariableNames:''

	poolDictionaries:''

	category:'Views-Text'

!

!FilenameEditField class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1994 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

documentation

"

    like a normal editField, but does filename-completion on the last word of

    the contents, when TAB is pressed.

    Filename completion ignores regular files if directoriesOnly is true,

    and ignores directories, if filesOnly is true. Both default to false.

    [author:]

        Claus Gittinger

"

!

examples

"

    |t f b v|

    v := ValueHolder with:'c:\'.

    t := StandardSystemView new.

    f := FilenameEditField in:t.

    f origin:10@10 corner:1.0@30.

    f model:v.

    b := Button in:t.

    b label:'Check'.

    b action:[ 

                Transcript show:'field: '; showCR: f contents. 

                Transcript show:'model: '; showCR: v value. 

             ].

    b origin:10@40.

    t open.

"

! !

!FilenameEditField methodsFor:'accessing'!

acceptOnExpand

    "return the autoAccept on filename expansion (pressing tab key) flag.

     The default is true, which means that an expand accepts"

    ^ acceptOnExpand

    "Modified: / 20-10-2010 / 17:49:23 / cg"

!

acceptOnExpand:aBoolean

    "set/clear autoAccept on filename expansion (pressing tab key).

     The default is true, which means that an expand accepts"

    acceptOnExpand := aBoolean

    "Modified: / 20-10-2010 / 17:49:11 / cg"

!

contents:someText

    "redefined to add a trailing file-separator if the displayed

     filename is a directory"

    ^ self

        contents:someText 

        addSeparatorToDirectories:true

!

contents:someText addSeparatorToDirectories:doAddSeparator

    "optionally add a trailing file-separator if the displayed

     filename is a directory."

    |newText f nm|

    newText := someText.

    doAddSeparator ifTrue:[

        directoriesOnly ifFalse:[

            someText notEmptyOrNil ifTrue:[

                f := someText asFilename.

                (f exists and:[f "asAbsoluteFilename" isDirectory]) ifTrue:[

                    nm := f name.

                    (nm endsWith:f separator) ifFalse:[

                        newText := nm copyWith:f separator

                    ]

                ]

            ].

        ].

    ].

    super contents:newText.

    self shown ifTrue:[

        self cursorToEndOfLine.

    ].

    "Modified: / 08-11-2007 / 11:54:05 / cg"

    "Modified: / 17-12-2018 / 12:53:16 / Claus Gittinger"

!

directoriesOnly

    <resource: #obsolete>

    "set to expand names for directories only"

    self obsoleteMethodWarning.

    directoriesOnly := true.

!

directoriesOnly:aBoolean

    "control if only directories can be choosen"

    directoriesOnly := aBoolean.

    directoriesOnly ifTrue:[

        filesOnly := false.

    ].

!

directory

    ^ directory

    "Modified: 7.9.1995 / 10:12:40 / claus"

!

directory:aFilename

    aFilename isNil ifTrue:[

        directory := Filename currentDirectory

    ] ifFalse:[

        directory := aFilename asFilename

    ]

    "Modified: 7.9.1995 / 10:12:55 / claus"

!

filesOnly

    <resource: #obsolete>

    "set to expand names for files only"

    self obsoleteMethodWarning.

    filesOnly := true.

!

filesOnly:aBoolean

    "control if only files can be choosen"

    filesOnly := aBoolean.

    filesOnly ifTrue:[

        directoriesOnly := false.

    ].

!

initialText:aString selected:aBoolean

    "redefined to move the cursor to the end 

     - that's the most interesting part of a filename

    "

    super initialText:aString selected:aBoolean.

    self cursorToEndOfLine.

!

showsDirectoriesOnly

    "return if expanding names for directories only"

    ^ directoriesOnly

    "Modified: 6.9.1995 / 20:35:30 / claus"

!

showsFilesOnly

    "return if expanding names for files only"

    ^ filesOnly

    "Modified: 6.9.1995 / 20:34:57 / claus"

! !

!FilenameEditField methodsFor:'actions'!

doFilenameCompletionFor:aString

    |newString isMultiMatch canonContents newDir|

    isMultiMatch := false.

    canonContents := Filename canonicalize:aString.

    newString := Filename 

                    filenameCompletionFor:canonContents 

                    directory:directory 

                    directoriesOnly:directoriesOnly 

                    filesOnly:filesOnly 

                    ifMultiple:[:dir |

"/                                dir asFilename isDirectory ifTrue:[

"/                                    self changed:#directory with:dir.

"/                                ].

                        isMultiMatch := true.

                        self flash.

                    ].

    "/ chose the one, if there is only one

    newString := Filename canonicalize:newString asFilename pathName.

    newString = canonContents ifTrue:[

        directory := canonContents asFilename.

        (directory exists 

         and:[directory isDirectory 

         and:[directory directoryContents size = 1 ]]) ifTrue:[

            newDir := directory / (directory directoryContents first).

            false "newDir isSymbolicLink" ifTrue:[

                newString := newDir name

            ] ifFalse:[    

                newString := newDir pathName.        

            ].

        ] ifFalse:[

            self flash.

        ]

    ].

    self contents:newString addSeparatorToDirectories:isMultiMatch not.

    "Modified (comment): / 23-01-2012 / 18:24:34 / cg"

    "Modified: / 13-07-2018 / 11:10:57 / Claus Gittinger"

! !

!FilenameEditField methodsFor:'event handling'!

keyPress:key x:x y:y

    "handle tab for filename completion.

     Bug: it completes the last word; it should complete the

          word before the cursor."

    <resource: #keyboard ( #Tab #FilenameCompletion ) >

    |oldContents newContents|

    enabled ifTrue:[

        ((key == entryCompletionCharacter) or:[key == #FilenameCompletion]) ifTrue:[

            oldContents := self contents.

            oldContents isNil ifTrue:[

                oldContents := ''

            ] ifFalse:[

                oldContents := oldContents asString

            ].

            self entryCompletionBlock value:oldContents.

            newContents := self contents.

            newContents isNil ifTrue:[

                newContents := ''

            ] ifFalse:[

                newContents := newContents asString

            ].

            newContents ~= oldContents ifTrue:[

                self textChanged.

                acceptOnExpand ifTrue:[

                    self accept 

                ]

            ].

            ^ self

        ]

    ].

    super keyPress:key x:x y:y.

    "Modified: / 06-03-2007 / 21:40:52 / cg"

! !

!FilenameEditField methodsFor:'initialization'!

initialize

    super initialize.

    acceptOnExpand := true.

    directoriesOnly := filesOnly := false.

    directory := Filename currentDirectory.

    self 

        entryCompletionBlock:[:contents |

            self doFilenameCompletionFor:contents.

        ].

    "Modified: 7.9.1995 / 10:20:46 / claus"

    "Modified: 7.9.1997 / 23:51:47 / cg"

!

mapped

    "redefined to move the cursor to the end 

     - that's the most interesting part of a filename

    "

    super mapped.

"/    self cursorToEndOfLine.

    self makeCursorVisible.

! !

!FilenameEditField class methodsFor:'documentation'!

version

    ^ '$Header$'

!

version_CVS

    ^ '$Header$'

! !